^ No, the compressed air goes in between layers of the foil. Think the outside of the watercube in Beijing, or the Eden Project.
On Eden:
Quote:
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The Eden Project designers formed this ETFE material into extremely sturdy pillows, each made from three sheets of ETFE foil welded together along the sides, one on top of the other, with layers of air pumped in between them. The air layers provide increased insulation without decreasing the amount of sunlight that shines through. The coolest thing about these pillows is that they are adjustable: On a colder day, they can be pumped up with more air to provide better insulation; on a hotter day, they can be partially deflated to allow more cooling.
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from:
http://science.howstuffworks.com/environmental/conservation/conservationists/eden3.htm
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